Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 98, NWS Greenville-Spartanburg, SC

April 20, 2011Habersham County, Rabun County, Stephens County, Georgia; Oconee County, South Carolina; Macon County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 20, 2011, 8:57 AM EDT for Habersham County, Rabun County, Stephens County, Georgia; Oconee County, South Carolina; Macon County, North Carolina. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 20, 2011, 8:57 AM EDT (12:57 UTC)
Expired: Apr 20, 2011, 9:47 AM EDT
In force: 50 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Habersham County, GA, Rabun County, GA, Stephens County, GA, Macon County, NC, Oconee County, SC

The radar

The Greer radar (KGSP), 118 km from the middle of the area, began a volume at 13:00 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 20, 7:55 AM EDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.0 hours before the alert went out and 193 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1316 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 466 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

007 
WUUS52 KGSP 201257
SVRGSP
GAC137-241-257-NCC113-SCC073-201400-
/O.NEW.KGSP.SV.W.0098.110420T1257Z-110420T1400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
857 AM EDT WED APR 20 2011

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  STEPHENS COUNTY IN NORTHEAST GEORGIA...
  RABUN COUNTY IN NORTHEAST GEORGIA...
  HABERSHAM COUNTY IN NORTHEAST GEORGIA...
  MACON COUNTY IN WESTERN NORTH CAROLINA...
  WESTERN OCONEE COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 1000 AM EDT

* AT 855 AM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
  OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 17 MILES WEST OF NANTAHALA LAKE
  TO 14 MILES WEST OF MOCCASIN CREEK STATE PARK TO 16 MILES WEST OF
  DEMOREST...OR ALONG A LINE EXTENDING FROM 5 MILES EAST OF MURPHY TO
  8 MILES EAST OF BLAIRSVILLE TO 5 MILES SOUTHWEST OF CLEVELAND...
  MOVING EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MOCCASIN CREEK STATE PARK AND BATESVILLE...
  NANTAHALA LAKE AND NACOOHE LAKE...
  RAINBOW SPRINGS AND KYLE...
  LAKE RABUN AND TURNERVILLE...
  TOCCOA AND MOUNTAIN CITY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE IN THE PATH OF THIS LINE OF SEVERE THUNDERSTORMS SHOULD BE
ALERT FOR LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND
LOCALLY HEAVY RAIN CAN OCCUR WITH ANY THUNDERSTORM. SEEK SHELTER
INDOORS AWAY FROM WINDOWS AND DOORS UNTIL THE STORM PASSES.

THIS LINE OF SEVERE THUNDERSTORMS MAY CAUSE FLOODING OF ROADS WITH 
POOR DRAINAGE. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER 
COVERS THE ROAD. THE WATER MAY BE TOO DEEP TO ALLOW YOUR VEHICLE TO 
CROSS.

TO REPORT DAMAGING WINDS...LARGE HAIL...OR FLOODING...THROUGH OUR
AUTOMATED REPORTING SYSTEM...CALL OUR TOLL FREE NUMBER...
1 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3524 8370 3531 8332 3527 8332 3523 8326
      3485 8305 3453 8309 3451 8314 3448 8366
      3451 8367 3454 8362 3465 8367 3476 8363
      3481 8368 3489 8366 3494 8360 3495 8356
      3502 8353 3515 8366 3516 8374
TIME...MOT...LOC 1257Z 269DEG 42KT 3508 8391 3484 8380
          3454 8380

$$
LGL

2 follow-up statements

295 
WWUS52 KGSP 201324
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
924 AM EDT WED APR 20 2011

GAC137-241-257-NCC113-SCC073-201400-
/O.CON.KGSP.SV.W.0098.000000T0000Z-110420T1400Z/
STEPHENS GA-RABUN GA-HABERSHAM GA-MACON NC-OCONEE SC-
924 AM EDT WED APR 20 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 AM EDT
FOR WESTERN OCONEE...MACON...HABERSHAM...RABUN AND STEPHENS
COUNTIES...

AT 917 AM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM RAINBOW SPRINGS TO LAKE BURTON TO
CLARKESVILLE...OR ALONG A LINE EXTENDING FROM 11 MILES EAST OF
HAYESVILLE TO 7 MILES WEST OF CLAYTON TO CLARKESVILLE...MOVING EAST
AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  TOCCOA AND MOUNTAIN CITY...
  FRANKLIN AND SKY VALLEY...
  PINE MOUNTAIN AND HIGHLANDS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT FOR LARGE HAIL AND
DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR
WITH ANY THUNDERSTORM. SEEK SHELTER INDOORS AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM PASSES.

&&

LAT...LON 3523 8328 3526 8330 3521 8324 3485 8305
      3463 8313 3451 8314 3448 8365 3451 8367
      3455 8362 3466 8367 3476 8363 3481 8368
      3485 8367 3491 8364 3495 8356 3503 8353
      3515 8366 3516 8371
TIME...MOT...LOC 1324Z 269DEG 42KT 3508 8352 3484 8342
          3460 8342

$$
LG

943 
WWUS52 KGSP 201347
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
947 AM EDT WED APR 20 2011

GAC137-241-257-NCC113-SCC073-201355-
/O.CAN.KGSP.SV.W.0098.000000T0000Z-110420T1400Z/
STEPHENS GA-RABUN GA-HABERSHAM GA-MACON NC-OCONEE SC-
947 AM EDT WED APR 20 2011

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN OCONEE...MACON...
HABERSHAM...RABUN AND STEPHENS COUNTIES IS CANCELLED...

THE THUNDERSTORMS THAT PROMPTED THE WARNING HAVE WEAKENED. 
HOWEVER...THEY ARE STILL CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH 
ALONG WITH FREQUENT LIGHTNING AS THEY MOVE EAST THROUGH THE WESTERN 
UPSTATE.


LAT...LON 3523 8328 3526 8330 3521 8324 3485 8305
      3463 8313 3451 8314 3448 8365 3451 8367
      3455 8362 3466 8367 3476 8363 3481 8368
      3485 8367 3491 8364 3495 8356 3503 8353
      3515 8366 3516 8371
TIME...MOT...LOC 1345Z 269DEG 42KT 3506 8307 3487 8293
          3463 8295

$$
LG

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 20, 7:03 AM EDT, 1 hour 54 minutes earlier.

Area forecast discussion, Apr 20, 7:03 AM EDT, 1 hour 54 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
703 AM EDT WED APR 20 2011

.SYNOPSIS...
A COLD FRONT WILL APPROACH THE REGION FROM THE WEST TODAY AND
GRADUALLY SLIDE ACROSS THE WESTERN CAROLINAS TONIGHT AND EARLY
THURSDAY. THE FRONT WILL BECOME STATIONARY AND LINGER ACROSS THE
UPPER SAVANNAH RIVER VALLEY THROUGH THURSDAY. SURFACE HIGH PRESSURE
WILL THEN BUILD TO OUR NORTHEAST AND ESTABLISH A COOL AIR WEDGING
PATTERN OVER THE CAROLINAS ON FRIDAY. WARM SOUTH TO SOUTH WESTERLY
WINDS WILL REESTABLISH THEMSELVES OVER THE WEEKEND.

&&

.NEAR TERM /THROUGH TONIGHT/...
LINE OF CONVECTION MOVG ACROSS E TN EARLY THIS MRNG CONTINUES TO
WEAKEN NOT ONLY WITH COOLING BUT AS IT ENCOUTERS THE DRYER AIR OVER
THE S APPALACHIANS. TWEAKED WINDS AND TEMPS...REST OF FCST LOOKS
GOOD ATTM.

PREVIOUS DISCUSSION...LATEST MODEL RUNS HAVE COME IN WITH LESS SHEAR
AND CAPE...AND WITH QPF REDUCED AS WELL. THE 4KM WRF HARDLY SHOWS
ANY PRECIP E OF THE MTNS THIS AFTN. LOW LEVEL MOISTURE WILL STILL
INCREASE TODAY AND WITH HEATING EXPECT CAPE VALUES AROUND 1200 J/KG.
BUFKIT SOUNDINGS SHOW 0-6KM BULK SHEAR AS HIGH AS 38KT. LOOK FOR AN
INCRSNG CHC OF SHWRS/TSTMS OVER THE MTNS THIS MRNG WITH LIKELY POPS
EARLY TO MID AFTN. POPS DROP OFF E OF THE MTNS WITH SOLID CHC
ADJACENT FOOTHILLS...BUT JUST A LOW END CHC AT CLT AS THE SFC
BOUNDARY MOVES INTO THE AREA. HIGHS WILL BE WELL ABOVE AVG THIS
AFTN. CONVECTION SHOULD DIMINISH WITH COOLING THIS EVE AND THE SFC
BOUNDARY IS EXPECTED TO PUSH JUST S OF THE CWA OVERNIGHT. MRNG LOWS
WILL BE ABOVE AVG.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY/...
AS OF 3 AM WEDNESDAY...A COLD FRONT IS EXPECT TO BECOME NEARLY
STATIONARY ALONG THE I-20 CORRIDOR BY SUNRISE THURSDAY. HIGH
PRESSURE CENTERED OVER THE GREAT LAKES IS FORECAST TO INCREASINGLY
RIDGE SOUTHWARD THROUGH THE DAY. MODELS INDICATE THAT WEAK SFC BASED
INSTABILITY WILL DEVELOP AS FAR NORTH AS THE UPPER SAVANNAH RIVER
VALLEY. ELSEWHERE...CONDITIONS SHOULD REMAIN FAIRLY STABLE AND MOIST
BELOW H5. WEAK UPSLOPE AND ISENTROPIC LIFT MAY SUPPORT A FEW SHRA
ACROSS THE NC FOOTHILLS AND PIEDMONT. THE GREATEST COVERAGE WILL
REMAIN ALONG THE SC/GA LINE NEAR THE SFC BOUNDARY AND
INSTABILITY...I WILL FORECAST LIKELY POPS OVER EXTREME NE GA TO SCHC
POPS NORTH OF THE CLT METRO. HIGHS ARE FORECAST TO PEAK ONE TO TWO
DEGREE ABOVE NORMAL.

THURSDAY NIGHT...CAD WILL DEVELOP OVER THE FORECAST AREA AS THE SFC
HIGH CENTER SETTLES OVER NEW ENGLAND AND LOW PRESSURE DEEPENS ACROSS
THE CENTRAL PLAINS. CIRCULATION AROUND THE LOW WILL RESULT IN
INCREASING UPSLOPE FLOW AND ISENTROPIC LIFT ACROSS THE CWA. I WILL
KEEP LIKELY POPS ACROSS THE MTNS AND CHC POPS EAST...FAVORING SHRA.
MIN TEMPS ARE FORECAST TO RANGE 5 TO 8 DEGREES ABOVE NORMAL.

FRIDAY...CAD IS EXPECTED TO PEAK DURING THE MORNING AND BEGIN TO
FADE DURING THE LATE AFTERNOON. SOUTHWEST H85 WINDS WILL STRENGTHEN
THROUGH THE DAY...YIELD GREATER ISENTROPIC LIFT ACROSS THE WEDGE.
FORECAST SOUNDINGS INDICATE A THICK SATURATED LAYER WITHIN THE
LOWEST 5 KFT. IN ADDITION...A SIGNIFICANT DECK OF CIRRUS LEVEL
MOISTURE SHOULD ARRIVE DURING THE MORNING AND REMAIN THROUGH THE
AFTERNOON...HELPING TO CONTINUE THE CAD. THE COMBINATION OF RICH
MOISTURE AND WEAK LIFT SHOULD PROVIDE LIKELY COVERAGE ACROSS THE
MTNS AND HIGH CHC EAST. THE NAM MOS AND 2M TEMPS SFC TEMPS INDICATE
WEDGE-LIKE VALUES AND AGREE WELL WITH THE PREVIOUS FORECAST. I WILL
CONTINUE TO INDICATE HIGH IN THE L60S ACROSS MOST THE CWA.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
AS OF 315 AM WEDNESDAY...VERY LITTLE CHANGE EXPECTED IN THE PATTERN
ACROSS THE SOUTHEAST U.S. FROM THIS WEEKEND THROUGH TUESDAY. A VERY
STRONG BERMUDA HIGH IS EXPECTED TO REMAIN RIDGED ACROSS THE REGION
THROUGH THE PERIOD. FORECAST SOUNDINGS KEEP LLVL MOISTURE FAIRLY
HIGH THROUGH THE PERIOD...RESULTING IN DIURNAL INSTABILITY. I WILL
TIME CHC TO SCHC COVERAGE EACH AFTERNOON AND EARLY EVENING.
TEMPERATURES WILL REMAIN GENERALLY 5 TO 8 DEGREES ABOVE NORMAL.

&&

.AVIATION /11Z WEDNESDAY THROUGH SUNDAY/...
AT KCLT...STILL EXPECT INCRSNG WIND SHEAR THIS MRNG BUT NOT ENOUGH
FOR LLWS REMARK. AS FRONT MOVES IN FROM THE NW THIS AFTN-EVE VFR
CUMULUS WILL DEVELOP BUT CHC PRECIP OR CB CLOUDS TOO LOW TO MENTION
ATTM. SW WINDS WILL SWING N AFT 06Z.

ELSEWHERE...LOW CLOUDS COMING IN FROM THE W WILL IMPACT KAVL FIRST
WITH VFR LOW CLOUD CIGS BY 15Z. EXPECT LOW LVL WIND SHEAR AT KAVL
UNTIL 15Z. FOR OTHER TERMINALS VFR CUMULUS WILL DEVELOP BY THIS AFTN
BUT CHC PRECIP OR CB CLOUDS TOO LOW TO MENTION ATTM.

OUTLOOK...A COLD FRONT WILL STALL NEAR S CWA TONIGHT AND THU.
UNSETTLED CONDITIONS WILL ACCOMPANY THE FRONT. LOW CLOUDS AND
SHOWERS EXPECTED THU NIGHT AND FRI AS COLD AIR DAMMING DEVELOPS
OVER THE REGION. CONDITIONS SHOULD GRADUALLY IMPROVE THROUGH THE
WEEKEND.

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...NONE.
SC...NONE.

&&

SYNOPSIS...NED
NEAR TERM...RB
SHORT TERM...NED
LONG TERM...NED
AVIATION...RB

Hazardous weather outlook, Apr 20, 8:02 AM EDT, 55 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
802 AM EDT WED APR 20 2011

GAZ010-017-018-026-028-029-NCZ059-062>065-SCZ001>006-010-011-211215-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-NORTHERN JACKSON-MACON-
SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-ANDERSON-ABBEVILLE-
802 AM EDT WED APR 20 2011

...SEVERE THUNDERSTORM WATCH 167 IN EFFECT UNTIL NOON EDT TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...WESTERN
NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

THIS AFTERNOON THROUGH EARLY EVENING...SCATTERED SHOWERS AND
THUNDERSTORMS WILL DEVELOP OVER THE WESTERN CAROLINAS AND
NORTHEAST GEORGIA. ONE OR TWO OF THESE STORMS MAY BECOME STRONG TO
SEVERE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE
HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.

NCZ033-035>037-048>053-056>058-068>072-082-501>510-SCZ007>009-
012>014-019-211215-
AVERY-ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-
BUNCOMBE-CATAWBA-ROWAN-GRAHAM-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-
CABARRUS-UNION NC-CALDWELL MOUNTAINS-GREATER CALDWELL-
BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS-EASTERN MCDOWELL-
RUTHERFORD MOUNTAINS-GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-
SPARTANBURG-CHEROKEE-YORK-LAURENS-UNION SC-CHESTER-GREENWOOD-
802 AM EDT WED APR 20 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH
CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

THIS AFTERNOON THROUGH EARLY EVENING...SCATTERED SHOWERS AND
THUNDERSTORMS WILL DEVELOP OVER THE WESTERN CAROLINAS AND
NORTHEAST GEORGIA. ONE OR TWO OF THESE STORMS MAY BECOME STRONG TO
SEVERE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

In the hours before

Special weather statement, Apr 20, 7:35 AM EDT, 1 hour 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
735 AM EDT WED APR 20 2011

NCZ058-201200-
GRAHAM-
735 AM EDT WED APR 20 2011

...A STRONG THUNDERSTORM WILL AFFECT GRAHAM COUNTY THROUGH 800 AM
EDT...

AT 728 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 8 MILES NORTHWEST OF MARBLE...OR 12 MILES NORTH
OF MURPHY...MOVING NORTHEAST AT 55 MPH.

THIS STORM WILL BE NEAR...
  SANTEETLAH LAKE AND ROBBINSVILLE...
  FONTANA VILLAGE...
  STECOAH...

SMALL HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS
STORM.

LAT...LON 3545 8387 3544 8368 3542 8365 3544 8364
      3543 8359 3539 8360 3533 8364 3532 8369
      3529 8369 3525 8371 3524 8377 3525 8384
      3521 8396 3523 8401 3536 8404

MCAVOY

Special weather statement, Apr 20, 8:39 AM EDT, 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
839 AM EDT WED APR 20 2011

NCZ064-065-509-SCZ001>006-201400-
TRANSYLVANIA-HENDERSON-POLK MOUNTAINS-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-
INCLUDING THE CITIES OF...BREVARD...HENDERSONVILLE...GREENVILLE
839 AM EDT WED APR 20 2011

...A BRIEF PERIOD OF VERY WINDY CONDITIONS THIS MORNING...

AN OUTFLOW BOUNDARY FROM A DISSIPATED LINE OF THUNDERSTORMS WILL
MOVE QUICKLY SOUTHEAST...ACROSS THE SOUTHERN MOUNTAINS OF NORTH
CAROLINA AND INTO UPSTATE SOUTH CAROLINA THROUGH 10 AM. WIND GUSTS
OF 40 TO 50 MPH WILL ACCOMPANY THE LINE. THIS MAY BLOW DOWN A FEW
TREES AND CAUSE SCATTERED POWER OUTAGES. THE STRONGEST WINDS WILL
AFFECT AREAS FROM ROSMAN TO BREVARD AND HENDERSONVILLE IN NORTH
CAROLINA...AND JAKE JOCASSEE TO PICKENS AND TRAVELERS REST IN
SOUTH CAROLINA.

MCAVOY

Special weather statement, Apr 20, 8:44 AM EDT, 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
844 AM EDT WED APR 20 2011

GAZ010-017-018-NCZ062-201330-
HABERSHAM-MACON-RABUN-STEPHENS-
844 AM EDT WED APR 20 2011

...STRONG THUNDERSTORMS WILL AFFECT HABERSHAM...MACON...RABUN AND
STEPHENS COUNTIES THROUGH 930 AM EDT...

AT 839 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES NORTHWEST OF
NOTTELY DAM TO 3 MILES NORTHWEST OF AURARIA...MOVING EAST AT 50 MPH.

THESE STORMS WILL BE NEAR...
  NANTAHALA LAKE...
  LAKE BURTON...
  NACOOHE LAKE...
  LAKE RABUN...
  CLAYTON...
  TOCCOA...

SMALL HAIL...AND WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THESE
STORMS.

LAT...LON 3522 8371 3531 8333 3499 8314 3475 8336
      3468 8334 3452 8313 3449 8366 3451 8367
      3454 8362 3465 8367 3476 8363 3481 8368
      3489 8366 3494 8360 3495 8356 3502 8353
      3515 8366 3516 8374

LGL

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 20, 8:44 AM EDT	Special Weather Statement	GSP	Habersham, Rabun, Stephens	46 min
Apr 20, 9:42 AM EDT	Special Weather Statement	GSP	Oconee, Pickens	48 min
Apr 20, 10:20 AM EDT	Special Weather Statement	GSP	Cherokee, Greenville, Spartanburg, Union	25 min
Apr 20, 7:35 AM EDT	Special Weather Statement	GSP	Graham	25 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2011 Severe Thunderstorm Warnings in South Carolina, 2011 Severe Thunderstorm Warnings in North Carolina, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.